Lose SDI Signal in capture mode

I'm trying to capture footage from my DVCPro deck. I can output video to the deck however, when I switch to capture mode the SDI light on my deck starts flashing like there is no signal coming in. I DO have deck control but all I see in the capture window is black. I am using the new Decklink Studio Card with FCP ver6.05 on an 8-core MacPro. Any help would be greatly appreciated!